CN216086526U - Electronic tail-gate control circuit and car - Google Patents
Electronic tail-gate control circuit and car Download PDFInfo
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- CN216086526U CN216086526U CN202122568180.1U CN202122568180U CN216086526U CN 216086526 U CN216086526 U CN 216086526U CN 202122568180 U CN202122568180 U CN 202122568180U CN 216086526 U CN216086526 U CN 216086526U
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Abstract
The embodiment of the utility model provides an electric tail gate control circuit and an automobile, wherein the electric tail gate control circuit is used for controlling an actuator motor to rotate and comprises the following components: a first transistor, a second transistor, a third transistor, and a fourth transistor; the pre-drive chip is electrically connected with the grid electrode of the first transistor, the grid electrode of the second transistor, the grid electrode of the third transistor and the grid electrode of the fourth transistor respectively; and the power supply input end of the main controller is electrically connected with the first pole of the first transistor, and the output end of the main controller is electrically connected with the pre-drive chip. The embodiment of the utility model provides an electric tail gate control circuit and an automobile, which are used for supplying power to a power input end of a main controller by utilizing electric energy generated by an actuator motor, so that the main controller is activated, and active anti-falling gate protection is provided in a non-power-on mode.
Description
Technical Field
The utility model relates to an automobile tail gate control technology, in particular to an electric tail gate control circuit and an automobile.
Background
The basic principle of the electric rear tail gate is that an Electronic Control Unit (ECU) obtains electricity from a storage battery of the whole vehicle, and drives an actuator motor to realize the functions of forward rotation, reverse rotation, speed control and the like of the tail gate according to user control input and a software algorithm. In practical use, if a user manually operates the electric tail gate, the motor of the actuator is a generator, and under the working condition of forcibly closing the gate, the generated voltage may reach more than 60V, so that permanent damage is easily caused to the ECU.
Regarding the anti-falling door protection, if the ECU is in the power-on mode, the software and hardware design can be used for detecting the operating speed of the actuator and executing the protection strategy. However, in the non-power-on mode of the ECU, the existing design has no active protection strategy, and both the design and the design adopt passive type, and a typical mode is to serially connect a relay in a motor loop. The relay is only attracted in the electric control mode, and the connection is disconnected in the manual mode to avoid high voltage from entering the ECU. The design can play a role in protection, but the defects are obvious, the current ECU design trend is to abandon the relay, adopt the MOSFET switch tube to achieve silence and higher reliability, and the additionally introduced relay reduces the reliability of the whole system and increases the cost.
The necessity of anti-drop door protection in the unpowered mode is mainly reflected in the assembly site of the car factory. With past experience, without a protected ECU, the after-market probability of damage caused by the assembly process is high.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides an electric tail gate control circuit and an automobile, which are used for supplying power to a power input end of a main controller by utilizing electric energy generated by an actuator motor, so that the main controller is activated, and active anti-falling gate protection is provided in a non-power-on mode.
In a first aspect, an embodiment of the present invention provides an electric tail gate control circuit, configured to control rotation of an actuator motor, including:
a first transistor, a second transistor, a third transistor and a fourth transistor, wherein a first pole of the first transistor and a first pole of the third transistor are electrically connected to a power supply terminal, a second pole of the first transistor is electrically connected to a first pole of the second transistor, a second pole of the third transistor is electrically connected to a first pole of the fourth transistor, a second pole of the second transistor and a second pole of the fourth transistor are both grounded, a second pole of the first transistor is electrically connected to a first terminal of the actuator motor, and a second pole of the third transistor is electrically connected to a second terminal of the actuator motor;
the pre-drive chip is electrically connected with the grid electrode of the first transistor, the grid electrode of the second transistor, the grid electrode of the third transistor and the grid electrode of the fourth transistor respectively;
the power input end of the main controller is electrically connected with the first pole of the first transistor, and the output end of the main controller is electrically connected with the pre-drive chip.
Optionally, the power supply further comprises a bypass diode, an anode of the bypass diode is electrically connected with the first pole of the first transistor, and a cathode of the bypass diode is electrically connected with the power supply input end of the main controller.
Optionally, the power supply system further comprises a voltage detection module, a first end of the voltage detection module is electrically connected with the power supply end, a second end of the voltage detection module is grounded, and an output end of the voltage detection module is electrically connected with a first detection end of the main controller.
Optionally, the voltage detection module includes a first resistor and a second resistor, a first end of the first resistor is electrically connected to the power supply terminal, a second end of the first resistor is electrically connected to a first end of the second resistor, and a second end of the second resistor is grounded;
and the second end of the first resistor is electrically connected with the first detection end of the main controller.
Optionally, the main controller is configured to control the second transistor and the fourth transistor to be turned on when the voltage of the first detection terminal is 0V.
Optionally, the pre-driver chip further comprises an on-off switch unit, a first end of the on-off switch unit is electrically connected with the power supply end, a second end of the on-off switch unit is electrically connected with the first pole of the first transistor, and a control end of the on-off switch unit is electrically connected with the pre-driver chip.
Optionally, the on-off switching unit includes a fifth transistor, a first pole of the fifth transistor is electrically connected to the power supply terminal, a second pole of the fifth transistor is electrically connected to the first pole of the first transistor, and a gate of the fifth transistor is electrically connected to the pre-driver chip.
Optionally, a first anti-reverse diode and a second anti-reverse diode are further included;
the anode of the first anti-reverse diode is electrically connected with the second pole of the first transistor, and the cathode of the first anti-reverse diode is electrically connected with the first pole of the first transistor;
the anode of the second anti-reverse diode is electrically connected with the second pole of the third transistor, and the cathode of the second anti-reverse diode is electrically connected with the first pole of the third transistor.
Optionally, the power supply further comprises a linear voltage-stabilized power supply, an input end of the linear voltage-stabilized power supply is electrically connected with the first pole of the first transistor and the power supply end of the chip, and an output end of the linear voltage-stabilized power supply is electrically connected with the power supply input end of the main controller.
In a second aspect, an embodiment of the present invention provides an automobile, including the electric tailgate control circuit according to the first aspect.
When a user manually operates the electric back door, the electric back door enables the actuator motor to generate electric energy under the action of mechanical force, and at the moment, the actuator motor is equivalent to a generator. In the embodiment of the utility model, the power supply input end of the main controller is electrically connected with the first electrode of the first transistor, and the electric energy generated by the motor of the actuator is utilized to supply power to the power supply input end of the main controller, so that the main controller is activated.
Drawings
Fig. 1 is a schematic diagram of an electric tail gate control circuit according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another electric tail gate control circuit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of another electric tail gate control circuit according to an embodiment of the present invention;
fig. 4 is a schematic view of an automobile according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic diagram of an electric tailgate control circuit according to an embodiment of the present invention, and referring to fig. 1, the electric tailgate control circuit is configured to control an actuator motor M to rotate, so as to drive an electric tailgate to open or close. The power tail gate control circuit includes a first transistor T1, a second transistor T2, a third transistor T3, and a fourth transistor T4. The first transistor T1, the second transistor T2, the third transistor T3, and the fourth transistor T4 constitute an H bridge. A first pole of the first transistor T1 and a first pole of the third transistor T3 are electrically connected to the power supply terminal PV1, a second pole of the first transistor T1 is electrically connected to a first pole of the second transistor T2, a second pole of the third transistor T3 is electrically connected to a first pole of the fourth transistor T4, and a second pole of the second transistor T2 and a second pole of the fourth transistor T4 are electrically connected to ground. The second pole of the first transistor T1 is electrically connected to the first terminal of the actuator motor M, i.e., the first pole of the second transistor T2 is electrically connected to the first terminal of the actuator motor M. The second pole of the third transistor T3 is electrically connected to the second terminal of the actuator motor M, i.e., the first pole and the second pole of the fourth transistor T4 are electrically connected to the second terminal of the actuator motor M. The electric tail gate control circuit also comprises a pre-drive chip GD and a main controller MCU. The pre-driver chip GD is electrically connected to the gates of the first transistor T1, the second transistor T2, the third transistor T3, and the fourth transistor T4, respectively, for controlling the turning on or off of the first transistor T1, the second transistor T2, the third transistor T3, and the fourth transistor T4. The power supply input end of the main controller MCU is electrically connected with the first pole of the first transistor T1, the output end of the main controller MCU is electrically connected with the pre-drive chip GD, and the main controller MCU can realize the conduction state control of the first transistor T1, the second transistor T2, the third transistor T3 and the fourth transistor T4 through the pre-drive chip GD.
When a user manually operates the electric back door, the electric back door enables the actuator motor M to generate electric energy under the action of mechanical force, and at the moment, the actuator motor M is equivalent to a generator. In the embodiment of the utility model, the power supply input end of the main controller MCU is electrically connected with the first electrode of the first transistor T1, and the electric energy generated by the motor M of the actuator is used for supplying power to the power supply input end of the main controller MCU, so that the main controller MCU is activated.
Illustratively, the master controller MCU may be activated by the voltage generated by the actuator motor M reaching a first voltage. The first voltage is less than or equal to 6V.
Optionally, referring to fig. 1, the power tail gate control circuit further includes a bypass diode 11, an anode of the bypass diode 11 is electrically connected to the first pole of the first transistor T1, an anode of the bypass diode 11 is electrically connected to the first pole of the third transistor T3, and a cathode of the bypass diode 11 is electrically connected to the power input terminal of the main controller MCU. In the embodiment of the utility model, a bypass diode 11 is connected in series between the first pole of the first transistor T1 and the first pole of the third transistor T3 and the power input end of the main controller MCU, and when a user manually operates the electric back door, the electric energy generated by the motor M of the actuator can supply power to the power input end of the main controller MCU through the bypass diode 11; when the main controller MCU is normally powered on to operate, the bypass diode 11 may prevent the power, which is normally loaded at the power input terminal of the main controller MCU, from being transmitted to the first pole of the first transistor T1 and the first pole of the third transistor T3.
Optionally, referring to fig. 1, the electric tail gate control circuit further includes a voltage detection module 32, a first end of the voltage detection module 32 is electrically connected to the power supply terminal PV1, a second end of the voltage detection module 32 is grounded, and an output end of the voltage detection module 32 is electrically connected to the first detection terminal of the main controller MCU. In the embodiment of the present invention, the electric tail gate control circuit further includes a voltage detection module 32, and after the main controller MCU is activated by the electric energy generated by the actuator motor M, the voltage of the power supply terminal PV1 is detected by the voltage detection module 32 after each power-on initialization of the main controller MCU is completed. Furthermore, the main controller MCU can execute a protection strategy according to the detected voltage of the power supply end PV1, and the situation that the voltage generated by manually operating the electric tail gate by a user damages the control circuit of the electric tail gate is avoided
Fig. 2 is a schematic diagram of another electric tail gate control circuit according to an embodiment of the present invention, referring to fig. 1 and fig. 2, the voltage detection module 32 includes a first resistor R1 and a second resistor R2, a first end of the first resistor R1 is electrically connected to the power supply terminal PV1, a second end of the first resistor R1 is electrically connected to a first end of the second resistor R2, and a second end of the second resistor R2 is grounded. The second end of the first resistor R1 is electrically connected with the first detection end of the main controller MCU, that is, the first end of the second resistor R2 is electrically connected with the first detection end of the main controller MCU. In the embodiment of the present invention, the voltage detection module 32 includes a first resistor R1 and a second resistor R2, the first resistor R1 and the second resistor R2 are connected in series between the power supply terminal PV1 and the ground terminal, and detect the voltage of the power supply terminal PV1 through a connection point between the first resistor R1 and the second resistor R2 as a detection point.
Optionally, the main controller MCU is configured to control the second transistor T2 and the fourth transistor T4 to be turned on when a voltage at the first detection terminal of the main controller MCU is 0V. In the embodiment of the utility model, when the voltage of the first detection end of the main controller MCU is 0V, the voltage of the output end of the voltage detection module 32 connected to the first detection end of the main controller MCU is 0V, that is, the voltage of the power supply end PV1 is 0V, at this time, electric energy is formed corresponding to manual operation to activate the main controller MCU, the main controller MCU controls the conduction of the second transistor T2 and the fourth transistor T4 by controlling the pre-driver chip GD, the first end of the actuator motor M is in short circuit with the second end of the actuator motor M, the first end of the actuator motor M is grounded, the second end of the actuator motor M is grounded, and the electric energy is discharged. Further, when the voltage of the first detection end of the main controller MCU is not 0V, the voltage of the output end of the voltage detection module 32 connected to the first detection end is not 0V, that is, the voltage of the power supply end PV1 is not 0V, which corresponds to the normal power-on operation of the main controller MCU at this time.
Optionally, referring to fig. 1 and 2, the electric tail gate control circuit further includes an on-off switch unit 31, a first end of the on-off switch unit 31 is electrically connected to the power supply terminal PV1, a second end of the on-off switch unit 31 is electrically connected to a first pole of the first transistor T1, and a control end of the on-off switch unit 31 is electrically connected to the pre-driver chip GD. The pre-drive chip GD controls on or off of the on-off switching unit 31. In the embodiment of the utility model, the electric tailgate control circuit further comprises an on-off switch unit 31, when the voltage of the first detection end of the main controller MCU is detected, that is, when the voltage of the power supply end PV1 is detected, the on-off switch unit 31 is controlled to be turned off, the electric energy generated by the actuator motor M is turned off at the on-off switch unit 31 and cannot be transmitted to the detection power supply end PV1 through the on-off switch unit 31, so that the influence of the electric energy generated by the actuator motor M on the voltage of the power supply end PV1 is avoided, and the false detection is avoided. Further, when the main controller MCU is normally powered on and operated, the on-off switch unit 31 can be controlled to be turned on, so that the detection power supply terminal PV1 supplies power to the actuator motor M.
Referring to fig. 1 and 3, the on-off switching unit 31 includes a fifth transistor T5, a first pole of the fifth transistor T5 is electrically connected to the power supply terminal PV1, a second pole of the fifth transistor T5 is electrically connected to the first pole of the first transistor T1, a second pole of the fifth transistor T5 is electrically connected to the first pole of the third transistor T3, and a gate of the fifth transistor T5 is electrically connected to the pre-driver chip GD. When the voltage of the power supply end PV1 is detected, the fifth transistor T5 is controlled to be cut off, the influence of electric energy generated by the motor M of the actuator on the voltage of the power supply end PV1 is avoided, and the false detection is avoided.
Optionally, referring to fig. 1-3, the electric tailgate control circuit further includes a first anti-reverse diode 21 and a second anti-reverse diode 22. The anode of the first anti-reverse diode 21 is electrically connected to the second pole of the first transistor T1, and the cathode of the first anti-reverse diode 21 is electrically connected to the first pole of the first transistor T1. The anode of the second anti-reverse diode 22 is electrically connected to the second pole of the third transistor T3, and the cathode of the second anti-reverse diode 22 is electrically connected to the first pole of the third transistor T3. It will be appreciated that when the user manually operates the power tailgate, the power tailgate causes the actuator motor M to generate electrical power under the influence of mechanical force. When a user manually opens the door, the actuator motor M rotates forwards, and when the user manually closes the door, the actuator motor M rotates backwards; or when the user manually opens the door, the actuator motor M rotates reversely, and when the user manually closes the door, the actuator motor M rotates forwards. In the embodiment of the present invention, the electric tailgate control circuit further includes a first anti-reverse diode 21 and a second anti-reverse diode 22, and performs rectification through the first anti-reverse diode 21 and the second anti-reverse diode 22, so that the first pole of the first transistor T1 and the first pole of the third transistor T3 are both positive voltages no matter the actuator motor M rotates forward or reversely.
Exemplarily, referring to fig. 1 to 3, the electric tailgate control circuit further includes a third anti-reflection diode 23 and a fourth anti-reflection diode 24. The anode of the third anti-reflection diode 23 is electrically connected to the second pole of the second transistor T2, and the cathode of the third anti-reflection diode 23 is electrically connected to the first pole of the second transistor T2. An anode of the fourth anti-reverse diode 24 is electrically connected to the second pole of the fourth transistor T4, and a cathode of the fourth anti-reverse diode 24 is electrically connected to the first pole of the fourth transistor T4.
In one embodiment, the first anti-reverse diode 21 is a body diode of the first transistor T1, the second anti-reverse diode 22 is a body diode of the third transistor T3, the third anti-reverse diode 23 is a body diode of the second transistor T2, and the fourth anti-reverse diode 24 is a body diode of the fourth transistor T4.
Optionally, referring to fig. 1 to 3, the electric tail gate control circuit further includes a linear regulator SBC, an input terminal of the linear regulator SBC is electrically connected to the first pole of the first transistor T1 and the chip power supply terminal PV2, and an output terminal of the linear regulator SBC is electrically connected to the power supply input terminal of the main controller MCU. In the embodiment of the utility model, the voltage of self-generation caused by door falling is a rising process, and the linear voltage-stabilized power supply SBC stabilizes the self-generation caused by door falling within a specific voltage range, prevents the rapidly rising voltage from being directly input to the power input end of the main controller MCU, and protects the normal work of the main controller MCU and the electric tail gate control circuit.
Illustratively, the output terminal of the linear regulated power supply SBC outputs a voltage of 5V. It is understood that in other embodiments, the output terminal of the linear regulated power supply SBC may output other values of voltage.
Exemplarily, referring to fig. 3, the power tail gate control circuit further includes a third resistor R3 and a fourth resistor R4, a first end of the third resistor R3 is electrically connected to the chip power supply terminal PV2, a second end of the third resistor R3 is electrically connected to a first end of the fourth resistor R4, and a second end of the fourth resistor R4 is grounded. The second end of the third resistor R3 is electrically connected with the second detection end of the main controller MCU. The second detection end of the main controller MCU is used for detecting the voltage of the chip power supply end PV2, so as to ensure that the voltage of the chip power supply end PV2 is kept within a preset voltage range, for example, within a voltage range of 9V to 16V, when the main controller MCU is normally powered on to operate.
Illustratively, referring to fig. 3, the power tail gate control circuit further includes a capacitor C and a power source terminal diode 12, a first plate of the capacitor C is electrically connected to a first pole of the first transistor T1 and a first pole of the third transistor T3, and a second plate of the capacitor C is grounded. The anode of the power supply end diode 12 is electrically connected with the chip power supply end PV2, and the cathode of the power supply end diode 12 is electrically connected with the input end of the linear stabilized power supply SBC.
An embodiment of the present invention further provides an automobile, fig. 4 is a schematic diagram of the automobile provided in the embodiment of the present invention, and referring to fig. 4, the automobile includes the electric tailgate control circuit in the embodiment described above, so that the automobile has the beneficial effect of the electric tailgate control circuit described above, that is, the electric energy generated by the actuator motor is used to supply power to the power input end of the main controller, so as to activate the main controller, and provide an active anti-falling door protection in the non-power-on mode.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (9)
1. An electric tail gate control circuit for controlling the rotation of an actuator motor, comprising:
a first transistor, a second transistor, a third transistor and a fourth transistor, wherein a first pole of the first transistor and a first pole of the third transistor are electrically connected to a power supply terminal, a second pole of the first transistor is electrically connected to a first pole of the second transistor, a second pole of the third transistor is electrically connected to a first pole of the fourth transistor, a second pole of the second transistor and a second pole of the fourth transistor are both grounded, a second pole of the first transistor is electrically connected to a first terminal of the actuator motor, and a second pole of the third transistor is electrically connected to a second terminal of the actuator motor;
the pre-drive chip is electrically connected with the grid electrode of the first transistor, the grid electrode of the second transistor, the grid electrode of the third transistor and the grid electrode of the fourth transistor respectively;
the power input end of the main controller is electrically connected with the first pole of the first transistor, and the output end of the main controller is electrically connected with the pre-drive chip.
2. The electrical tail gate control circuit of claim 1, further comprising a bypass diode, an anode of the bypass diode electrically connected to the first pole of the first transistor, and a cathode of the bypass diode electrically connected to the power input of the main controller.
3. The electric tail gate control circuit according to claim 1, further comprising a voltage detection module, wherein a first end of the voltage detection module is electrically connected to the power supply terminal, a second end of the voltage detection module is grounded, and an output end of the voltage detection module is electrically connected to the first detection terminal of the main controller.
4. The electric tail gate control circuit according to claim 3, wherein the voltage detection module comprises a first resistor and a second resistor, a first end of the first resistor is electrically connected with the power supply end, a second end of the first resistor is electrically connected with a first end of the second resistor, and a second end of the second resistor is grounded;
and the second end of the first resistor is electrically connected with the first detection end of the main controller.
5. The electric tail gate control circuit according to claim 1, further comprising an on-off switch unit, wherein a first end of the on-off switch unit is electrically connected to the power supply end, a second end of the on-off switch unit is electrically connected to the first pole of the first transistor, and a control end of the on-off switch unit is electrically connected to the pre-driver chip.
6. The electric tail gate control circuit according to claim 5, wherein the on-off switch unit comprises a fifth transistor, a first pole of the fifth transistor is electrically connected with the power supply terminal, a second pole of the fifth transistor is electrically connected with the first pole of the first transistor, and a gate of the fifth transistor is electrically connected with the pre-driver chip.
7. The electric tailgate control circuit according to claim 1, further comprising a first anti-reverse diode and a second anti-reverse diode;
the anode of the first anti-reverse diode is electrically connected with the second pole of the first transistor, and the cathode of the first anti-reverse diode is electrically connected with the first pole of the first transistor;
the anode of the second anti-reverse diode is electrically connected with the second pole of the third transistor, and the cathode of the second anti-reverse diode is electrically connected with the first pole of the third transistor.
8. The power tail gate control circuit of claim 1, further comprising a linear regulated power supply having an input electrically connected to the first pole of the first transistor and to a chip supply, and an output electrically connected to the power input of the master controller.
9. An automobile comprising the electric tailgate control circuit according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122568180.1U CN216086526U (en) | 2021-10-25 | 2021-10-25 | Electronic tail-gate control circuit and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122568180.1U CN216086526U (en) | 2021-10-25 | 2021-10-25 | Electronic tail-gate control circuit and car |
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| Publication Number | Publication Date |
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| CN216086526U true CN216086526U (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122568180.1U Active CN216086526U (en) | 2021-10-25 | 2021-10-25 | Electronic tail-gate control circuit and car |
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| CN (1) | CN216086526U (en) |
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2021
- 2021-10-25 CN CN202122568180.1U patent/CN216086526U/en active Active
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